Juan Carlos Moreno1, Javier Cañada2 and José Vincente Boscà3
1,3 Applied Physics Department
2 Applied Thermodynamics Department
Universidad Politénica de Valencia; Cno.de Vera s/n 46071 Valencia (Spain)
1 Fax: (34) 963877329
E-mail:
1 [email protected];
2 [email protected];
3 [email protected]
Received: 8 November 2002 / Accepted: 9 August 2003 / Published: 31 December 2003
Abstract: The purpose of this paper is to analyze the external factor perturbations on solar radiation. Firstly, the influence on the photon distribution function in the space of frequencies is analyzed and, later, the modification generated in equations of internal energy, entropy, and radiation is viewed in order to deduce an expression to calculate the spectral exergy of perturbed radiation.
Keywords: exergy; blackbody radiation; internal energy; entropy.